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Dibenzylidene Sorbitol (DBS) Nucleating Agent for PP

Número CAS: 32647-67-9

Dibenzylidene Sorbitol (DBS) is an alpha-nucleating and clarifying agent for polypropylene that dramatically increases the crystallization rate, leading to a finer spherulite structure and significantly improved optical transparency. It raises the heat deflection temperature by 5–15°C and stiffness without adversely affecting impact strength. Typical loading is 0.1–0.3% in PP films, blow-molded containers, and injection-molded packaging.

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Especificaciones Técnicas

appearanceWhite fine powder
purity (%)≥99
melting point (°C)216–220
recommended loading (%)0.1–0.3
particle size (D50, μm)≤10

Aplicaciones

  • PP blown and cast films for food packaging
  • Injection-molded PP containers and closures
  • Blow-molded PP bottles requiring optical clarity
  • PP thermoformed trays and cups
  • Fiber and nonwoven PP applications requiring faster crystallization

Características Principales

  • DBS nucleating agent reduces PP crystallization onset temperature by up to 15°C for faster cycle times
  • Clarifying effect increases light transmittance of PP plaques to >90%
  • Improves heat deflection temperature (HDT) by 5–15°C at 0.2% loading
  • Compatible with standard PP antioxidant and slip additive packages

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Dibenzylidene Sorbitol (DBS) Nucleating Agent for PP chemical structure

CAS Number

32647-67-9

Availability

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